2012 has been quite a year for Kristen Stewart: the epic "Twilight Saga" came to an end, she's showing her boobs in another film, and she's dealt with tabloid dramz in her relationship  with R.Pattz. Still, it seems nothing brings this girl down.

It's hard to believe the 22-year-old actress really did anything before she signed on as Bella Swan just a few years ago. But we know better than that. Her breakout role came at 12-years-old as Jodie Foster's daughter in "Panic Room," and that was only the beginning.

In "On the Road," out this weekend, Stewart takes the passenger seat for a cross-country trip with Garrett Hedlund and Sam Riley in a film based on Jack Kerouac's novel of the same name. The story follows young writer Sal Paradise (Riley) as he travels through the States with his free-spirited buddy Dean Moriarty (Hedlund) and Moriarty's teen bride (Stewart) during the 1950s. The threesome (uh, yeah, there's that scene too) ditch life in New York in search of new experiences.

Funny, though, how one of Stewart's childhood gigs would come into play for her role in "On the Road." Long before she was a credited actress, K.Stew was featured in a Porsche commercial where she enjoys a daily road trip with the wind blowing in her hair. In the TV spot, Stewart realizes there's no way she's hopping on a boring yellow school bus when she can hitch a ride in a fancy sports car. Who can blame her?

Here she is back in the day, cute pigtails and all: